Take care of two Clang warnings.

patches/clang.patch

Index: patches/clang.patch
===================================================================
--- patches/clang.patch	(revision 122103)
+++ patches/clang.patch	(working copy)
@@ -11,3 +11,100 @@
  #else
    return extract(start, _length, dst, dst!=0 ? 0xffffffff : 0, codepage);
  #endif
+Index: source/i18n/colldata.cpp
+===================================================================
+--- source/i18n/colldata.cpp	(revision 122103)
++++ source/i18n/colldata.cpp	(working copy)
+@@ -236,9 +236,14 @@
+         int32_t newMax = listMax + STRING_LIST_BUFFER_SIZE;
+ 
+         UnicodeString *newStrings = new UnicodeString[newMax];
++        if (newStrings == NULL) {
++            status = U_MEMORY_ALLOCATION_ERROR;
++            return;
++        }
++        for (int32_t i=0; i<listSize; ++i) {
++            newStrings[i] = strings[i];
++        }
+ 
+-        uprv_memcpy(newStrings, strings, listSize * sizeof(UnicodeString));
+-
+ #ifdef INSTRUMENT_STRING_LIST
+         int32_t _h = listSize / STRING_LIST_BUFFER_SIZE;
+ 
+Index: source/i18n/decNumber.c
+===================================================================
+--- source/i18n/decNumber.c	(revision 122103)
++++ source/i18n/decNumber.c	(working copy)
+@@ -1502,7 +1502,14 @@
+       }
+     uprv_decNumberZero(w);                   /* set up 10...  */
+     #if DECDPUN==1
++    #ifdef __clang__
++    #pragma clang diagnostic push
++    #pragma clang diagnostic ignored "-Warray-bounds"
++    #endif
+     w->lsu[1]=1; w->lsu[0]=0;           /* ..  */
++    #ifdef __clang__
++    #pragma clang diagnostic pop
++    #endif
+     #else
+     w->lsu[0]=10;                       /* ..  */
+     #endif
+@@ -2934,6 +2941,10 @@
+       /* Set t=0.259, a=0.819  */
+       t->exponent=-3;
+       a->exponent=-3;
++      #ifdef __clang__
++      #pragma clang diagnostic push
++      #pragma clang diagnostic ignored "-Warray-bounds"
++      #endif
+       #if DECDPUN>=3
+         t->lsu[0]=259;
+         a->lsu[0]=819;
+@@ -2944,6 +2955,9 @@
+         t->lsu[0]=9; t->lsu[1]=5; t->lsu[2]=2;
+         a->lsu[0]=9; a->lsu[1]=1; a->lsu[2]=8;
+       #endif
++      #ifdef __clang__
++      #pragma clang diagnostic pop
++      #endif
+       }
+      else {                                  /* odd exponent  */
+       /* Set t=0.0819, a=2.59  */
+@@ -2951,6 +2965,10 @@
+       exp++;                                 /* e=e+1  */
+       t->exponent=-4;
+       a->exponent=-2;
++      #ifdef __clang__
++      #pragma clang diagnostic push
++      #pragma clang diagnostic ignored "-Warray-bounds"
++      #endif
+       #if DECDPUN>=3
+         t->lsu[0]=819;
+         a->lsu[0]=259;
+@@ -2961,6 +2979,9 @@
+         t->lsu[0]=9; t->lsu[1]=1; t->lsu[2]=8;
+         a->lsu[0]=9; a->lsu[1]=5; a->lsu[2]=2;
+       #endif
++      #ifdef __clang__
++      #pragma clang diagnostic pop
++      #endif
+       }
+ 
+     decMultiplyOp(a, a, f, &workset, &ignore);    /* a=a*f  */
+@@ -5637,7 +5658,14 @@
+     /* lookaside fastpath code for ln(2) and ln(10) at common lengths  */
+     if (rhs->exponent==0 && set->digits<=40) {
+       #if DECDPUN==1
++      #ifdef __clang__
++      #pragma clang diagnostic push
++      #pragma clang diagnostic ignored "-Warray-bounds"
++      #endif
+       if (rhs->lsu[0]==0 && rhs->lsu[1]==1 && rhs->digits==2) { /* ln(10)  */
++      #ifdef __clang__
++      #pragma clang diagnostic pop
++      #endif
+       #else
+       if (rhs->lsu[0]==10 && rhs->digits==2) {                  /* ln(10)  */
+       #endif