fix a few linux compilation warnings

core/src/fxcodec/codec/fx_codec_jpx_opj.cpp

Index: core/src/fxcodec/codec/fx_codec_jpx_opj.cpp
diff --git a/core/src/fxcodec/codec/fx_codec_jpx_opj.cpp b/core/src/fxcodec/codec/fx_codec_jpx_opj.cpp
index c4a0f88201a81db97599ac9aea9b1d7385585cdd..501a6845edca988995456fedf17b24d38af12738 100644
--- a/core/src/fxcodec/codec/fx_codec_jpx_opj.cpp
+++ b/core/src/fxcodec/codec/fx_codec_jpx_opj.cpp
@@ -314,6 +314,7 @@ void color_apply_icc_profile(opj_image_t *image)
 {
     cmsHPROFILE in_prof, out_prof;
     cmsHTRANSFORM transform;
+    // TODO(tsepez): unused in_space seems suspicious.
     cmsColorSpaceSignature in_space, out_space;
     cmsUInt32Number intent, in_type, out_type, nr_samples;
     int *r, *g, *b;
@@ -469,14 +470,12 @@ void color_apply_conversion(opj_image_t *image)
         int *L, *a, *b, *red, *green, *blue, *src0, *src1, *src2;
         double rl, ol, ra, oa, rb, ob, prec0, prec1, prec2;
         double minL, maxL, mina, maxa, minb, maxb;
-        unsigned int default_type, il;
-        unsigned int i, max, illu;
+        unsigned int default_type;
+        unsigned int i, max;
         cmsHPROFILE in, out;
         cmsHTRANSFORM transform;
         cmsUInt16Number RGB[3];
         cmsCIELab Lab;
-        illu = 0;
-        il = 0;
         in = cmsCreateLab4Profile(NULL);
         out = cmsCreate_sRGBProfile();
         transform =
@@ -673,7 +672,6 @@ FX_BOOL CJPX_Decoder::Decode(FX_LPBYTE dest_buf, int pitch, FX_BOOL bTranslateCo
     FX_BYTE** channel_bufs;
     int* adjust_comps;
     int i, wid, hei, row, col, channel, src;
-    FX_BOOL flag;
     FX_LPBYTE pChannel, pScanline, pPixel;
 
     if(image->comps[0].w != image->x1 || image->comps[0].h != image->y1) {
@@ -692,7 +690,6 @@ FX_BOOL CJPX_Decoder::Decode(FX_LPBYTE dest_buf, int pitch, FX_BOOL bTranslateCo
         FX_Free(channel_bufs);
         return FALSE;
     }
-    flag = TRUE;
     for (i = 0; i < (int)image->numcomps; i ++) {
         channel_bufs[i] = dest_buf + offsets[i];
         adjust_comps[i] = image->comps[i].prec - 8;
@@ -700,7 +697,6 @@ FX_BOOL CJPX_Decoder::Decode(FX_LPBYTE dest_buf, int pitch, FX_BOOL bTranslateCo
             if(image->comps[i].dx != image->comps[i - 1].dx
                     || image->comps[i].dy != image->comps[i - 1].dy
                     || image->comps[i].prec != image->comps[i - 1].prec) {
-                flag = FALSE;
                 goto failed;
             }
         }