fix compiler warnings for gcc

Author: JuliaRS

src_c/IMB_chk_diff.c

@@ -1062,8 +1062,10 @@ Output variables:
         if (pos2 - pos1 + 1 == lengths[i])
             c_info->reccnt[rank]++;
         else if (i < Npos) {
-            if (ranks[i + 1] == rank && pos2 - pos1 + 1 == (lengths[i] + (lengths[i + 1])))
-                c_info->reccnt[rank]++; i++;
+            if (ranks[i + 1] == rank && ((pos2 - pos1 + 1) == (lengths[i] + lengths[i + 1]))) {
+                c_info->reccnt[rank]++;
+                i++;
+            }
         }
 
         i++;

src_c/IMB_output.c

@@ -343,9 +343,9 @@ Input variables:
 
             case SAMPLE_FAILED_INT_OVERFLOW:
 #ifdef MPI1
-                sprintf(aux_string + offset, " int-overflow; The production rank*size caused int overflow for given sample; use flag \"-data_type double\"");
+                sprintf(aux_string + offset, " int-overflow; The production rank*size caused int overflow; use \"-data_type double\"");
 #else
-                sprintf(aux_string + offset, " int-overflow; The production rank*size caused int overflow for given sample");
+                sprintf(aux_string + offset, " int-overflow; The production rank*size caused int overflow;");
 #endif
                 break;
             case SAMPLE_FAILED_TIME_OUT: